If \[{{z}_{1}}\] and \[{{z}_{2}}\] are any two complex numbers then \[|{{z}_{1}}+{{z}_{2}}{{|}^{2}}\] \[+|{{z}_{1}}-{{z}_{2}}{{|}^{2}}\] is equal to [MP PET 1993; RPET 1997]

\[|{{z}_{1}}{{|}^{2}}+\,|{{z}_{2}}{{|}^{2}}\]

\[2|{{z}_{1}}{{|}^{2}}\,|{{z}_{2}}{{|}^{2}}\]

\[2|{{z}_{1}}{{|}^{2}}+\,2\,\,|{{z}_{2}}{{|}^{2}}\]

\[2|{{z}_{1}}|\,\,|{{z}_{2}}|\]

If \[{{z}_{1}}\] and \[{{z}_{2}}\] are any two complex numbers then \[

1.	If \[{{z}_{1}}\] and \[{{z}_{2}}\] are any two complex numbers then \[\|{{z}_{1}}+{{z}_{2}}{{\|}^{2}}\] \[+\|{{z}_{1}}-{{z}_{2}}{{\|}^{2}}\] is equal to [MP PET 1993; RPET 1997]
A.	\[2\|{{z}_{1}}{{\|}^{2}}\,\|{{z}_{2}}{{\|}^{2}}\]
B.	\[2\|{{z}_{1}}{{\|}^{2}}+\,2\,\,\|{{z}_{2}}{{\|}^{2}}\]
C.	\[\|{{z}_{1}}{{\|}^{2}}+\,\|{{z}_{2}}{{\|}^{2}}\]
D.	\[2\|{{z}_{1}}\|\,\,\|{{z}_{2}}\|\]
Answer» C. \[\|{{z}_{1}}{{\|}^{2}}+\,\|{{z}_{2}}{{\|}^{2}}\]

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If \[{{z}_{1}}\] and \[{{z}_{2}}\] are any two complex numbers then \[|{{z}_{1}}+{{z}_{2}}{{|}^{2}}\] \[+|{{z}_{1}}-{{z}_{2}}{{|}^{2}}\] is equal to [MP PET 1993; RPET 1997]

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